Selective removal of chlorine from solutions of chlorine dioxide

Details Selective removal of chlorine from solutions of chlorine dioxide Selective removal of chlorine from solutions of chlorine dioxide

1986-10-29

1988-03-15

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 94, 204 95, 204101, 204103, C25B 126

Patent

active

047311690

ABSTRACT:
Chlorine is selectively cathodically electrolytically removed from aqueous solutions of chlorine dioxide and chlorine by the application of an electrode potential at a pH of the aqueous solution of up to about 4. Chlorine is electrolytically reduced to chloride ions while the concentration of the chlorine dioxide remains substantially the same in the treated solution. The chlorine reduction is effected directly at pH values up to about 2 using a low overpotential cathode and indirectly at pH values up to about 4 using a high overpotential cathode.

REFERENCES:
patent: 1740165 (1929-12-01), Englehardt
patent: 2717237 (1955-09-01), Rempel
patent: 3102085 (1963-08-01), Edwards et al.
patent: 3616385 (1971-10-01), Kloss et al.
patent: 3884777 (1975-05-01), Harke et al.
patent: 3969201 (1976-07-01), Oloman et al.
patent: 4222833 (1980-09-01), Carlson
patent: 4456510 (1984-06-01), Murakami et al.

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